Engraver&#39;s tool.



'T. AGKLEY. i ,BNGRAVERS TOOL.

APPLICATION FILED A2126, 1906 Wihgemm PATENTED MAIL-20, 1906.

UNITED STATES PATENT OFFICE.

THADDEUS ACKLEY, OF WARREN,-OHIO, A'SSIGN OR ONE-HALF TO WILLIAM DOUGLAS AOKLEY, OF WARREN, OHIO.v

ENGRAVECRS TOOL.

I Specification of Letters Patent.

Patented March 20, 1906.

, To all whom, it may concern:

Be it known that I, TnADDEUs AoKLEY', of

-Warren, in the county of Trumbull and State of-Ohio, have invented certain new and useful Improvements in Engravers" Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention,

' such as will enable others skilled in the art to which it appertains to make and use the proved means for' holding the device as a whole in various positions.

The invention will be hereinafter fully set forth, and particularly pointed out in the a claims.

- In the accompanying drawings, Figure 1 is avertical sectional view. Fig. 2 is an edge view of one of the slides with parts broken away. Figs. 3 and 4 are views of the holding-pins. Fig. 5 shows a slight modification. Fig. 6 is a-bottom plan view with the baseplate removed.

Referrin to the drawings, 1 designates the head or taldle, upon which are mounted two 'slidesor blocks 2' and 3, capable of being moved toward and away from each other by a right and left hand screw rod 1, working in lugs 5, depending from the under sides of the blocks, said lu s fitting in a guideway in the top of the tab e. This screw-rod is held at its center and at one end is engaged by the shank of a milled disk 6, which shank is held to the screw-rod by a crossin 7. In this way the means for turning t e screw-rod is always present and in position. The block 2 is pivotally mounted on its lug by means of a boss 8, fitting in an o enin'g in such block, a retaining-screw 9 hol ing the parts together. This permits the block 2 tobe turned on its bearing; but in order toprevent it from so turning accidentally the right-lined face of this block carries a pivoted plate ,10, of very thin material, said plate having a depending portion which fits in the guideway, being eld in its lowered position by a small lug 12.

. When it is desired to turn the block 2 0n its pivot, this plate is moved upwardly, so as to ent lengths to accommodate articles of various sizes. According to my invention this is unnecessary, since allof the pins may be ofv Withdraw its depending portion from the.

' has been customary to employ pins of difiera uniform length, friction means being employed to insure each pin remaining in what-' ever position it may be caused to occupy. This frictional means may consist of a fine spring-wire 14, secured at one end in a groove running longitudinally of the pin, its other end being free, (see Fig. 3,) or, as shown in Fig. 4:, the frictional means may consist of a Wire ring 15, encircling a pin at the lower end thereof. Then a ain' a s ring, as 16, may be located in each of the ho es instead of on the pins, so as to afford sufficientfriction to retain the pins in whatever position they may be caused to occu y. (See Fig. 5.) In lieu of springs felt, leat er,- or other retarding material may be employed.-

The head 1 is rotatable on roller-bearings 18 at the top of a post 19, and from said head depends a rod 20. The base consists of two telesco ic hemispheroidal members, the in ner or ower member 21 being fastened to a fiat plate 22, while the upper outer member is securedto post 19 by a nut 23. The top of the member 21 is cut off. The nut 23 also retains a spider-like plate 24, of s ring metal, the arms of such plate engaging t e inner surface of the inner. lower member of the base. In this way the two members are held under sufficient frictional contact to allow the upper outer member to which the post is secured to be turned into any desire position.

The advantages of my improvement are apparent. tlonal means each of the holding-pins may be retained at any desired point, and in consequence I am enabled to obtain by one set ofins of uniform length all the advantages eretofore arising from the use of pins of varying lengths. It willalso be seen that although one ofthe blocks may be readily turned to occupy different positions relatively to the other block, yet the accidental displacement thereof is prevented by the It will be seen that by the fricplate 10, fitting in the guideway. Furthermore, I have provided extremely simple and inexpensive means for permitting the device as a whole to be turned into different positions.

I claim as my invention- 1. An engravers tool comprising a table having a guideway in its top, blocks having lugs fitting in said guideway, one block being pivotally mounted on its lug, a screw-rod engaging both lugs, and means carried by said pivotally-mounted block and normally held in said guideway for preventing said block from turning accidentally.

2. An engravers tool comprising a table having a guideway in its top, blocks having lugs fitted in said guideway, one block being pivotally mounted on its lug, a screw-rod enboth lugs, and a flat plate pivotally secured to the right face of said pivot-block having a central portion depending into said guideway.

3. An engravers tool formed with a plurality of openings in its top, a plurality of pins designed to be accommodated by said openings, a spring mechanism for securing said pins in said openings by frictional engageon said post for securing the latter to said socket, such convex member being open at its top, and a spring-plate movable with said post and socket and having frictional engagement with the inner face of said convex member.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

THADDEUS ACKLEY.

l/Vitnosses:

HERMAN A. GEUss, W. E. GEUss. 

